Compressor construction for ice machines



Nov. 25, 1930.

R. M. HVID COMPRESSOR CONSTRUCTION FOR ICE MACHINES Filed Oct. 25. 1927 2' 52 a F1 I v J7 ll Patented Nov. 25, 1930 sashes "HvInQ or CHICAGO, innino s coMrnnsson oonsTRooTIoN non ionf vmonmns mi 11PM: L 1 j p r PM I My invent on relates ,o ce mach nes and y partienla'rly to, aodetail of .Tconstrnetion; of

t eshii di c b i my bii ng appl it he w th-1 i ow pecki e len ii o Qn yi ti he te m te .t li fiqn qie he .iA ietv i my iii iQn is be p i e an efficient driving n eains for the compressor o 19 ,191 end sui ably; sea the i Pre ure c em er wi h tt use 0i i st i e ommon sort;

desigr i and rq er ti a of i m h e 0f t e pre e tity xi th o e l he i hp e;

senses; an Q l-u iSw nsbox lf r a rt n and likelytto deteriorate foliowingoontinned us i; and mm-im m n i in e e to ellmmet l is i hi r edi ntsa T! L e mn the e d esu t! prev de e ro n m al i ete v eel nsiie nt n in Qrd r t i sur con inu za d r ct e; p at o lv' e d vide were eliettf nt t r sect ons e nne'eting th m by a o et e plin n o d rj a dist t n fthe reelin p int-1 e 25 Another improver nent r nt disclosed ref h meensfe e ns e r i V th ocilfnn' ati O i o i the high pressure" chamber, extendiirgra qss the space et ween the co npressors oil' purnp atria the planet the conf'denserr n i The inTentionfvvill be-mere stoodibyre ferencetothe accom a ng draw ingsinvvhi'c'h: i E 1 ig; I 1 l is a vertioal sectional "vlew through an ioe ma'chine constructed in accordance with myinventiomandl i 1 Fig. 2 is a detailed sectionaiview showing 1 the sealing device employed in the machine.

it The machine of my invention comprises a three-part casing, 10, 1 1,. 12';;the space within the casing beinginnder high pressure The intermediate portion-(11 acts as a support for aciomrres or, 3; endaehea i g o f i e h Application fil-eaottober 'zsjisev; sermrm.zzssiabfiw shaft, 14. An oil iriounted theilower portion of thehigh pressure chzinoher, the pnmp having adi'scharge pipe, 16 for delivering gas and oil throughjthe intermediate Wall, 11, into the npper portionpo'f the high pressure chamber. The compress sors and oil pump are driven by the. shaft 14."

Connected to the upperportionot the driven shaft 14 is a conical diso 17having a mar- U v projection 19 from theWall Oil thrown ginal flange 18 which lies oloseto anannular upward hy the pump or carried in suspension by the gasin its travel to the outlet pipe, 20,

contacts With the rapidlyrevolvi-ng disc 17 (0' around the disc,thence upwardand outward 1 and is thrown outward; While the gas passes through the pipe. v

casing being supported on suitablewlegs gi 2lm A motor shaft 22 is operatively connecte'd toj I A motor,A, 1s mounted direetly abovethe Q the motor and an intermediate shaft23 joins the motor shaft 22 and'the driven shaft, v A loose coupiing24, of common form, operatively Connects the shafts 22, 23, whilea similar loose conpling connects the shafts HQ [Theshaft 23 has an enlarged cylindrical portion 25 providedwith a; central opening ,7 and ith a transverse slot, 26}, inits loyvfer end. A a'sherQ'TQhasacentral;transverse 1115 28, and oppositelydisposed laterally pro-"' jectingliigs 29.- :The- 1ug28 engages in the v dr slot in the enlarged portion 25,'ivhiie the lugs 29 engage the slots n a clamping nut; 30,'

having" threaded engagement the shaft inpiaoe At the uhotion o f the sinall and large p015 tions ofthe shaft,23; Iprovideajtapered seat,-'31 which cooperates with the ground 'surtaceon a pl ug532, composed of special alloy; and fitted Within the bearing member 33, relnoyahly fixed to the top wall ofjtlie casingilOf The'provision'ofltheenlargedhpon;

e l t wi eftibeeree wa er n fif of the ground surfaces, due to the presr within the high pressure chamber. I-owever, in order to insure constantseating at all times, regardless of the presence of increased pressure within the chamber, 3 provide a compression spring, 3% within the recess in the enlarged portion of the shaft, the spring bearing against the lug, 28 and tending to separate the shafts, l l, 23.

By so constructing the shafts that the intermediate shaft which projects through the wall is entirely independent of the othe two shafts, I am able to insure long and eflicient operation without tae possibilit of distortion or uneven wear because of inaccuracies in construction or assembly.

The machine operates as follows: The motor being in operation, the shaft is rotated causing reciprocation of the piston in the cylinder 13. Gas is drawn into the compressor from the expansion chamber (not shown) through the pipe and check valve 35. During the compression stroke of the piston, the cylinder has rotated so that the ports 37 are closed and the compressed gas is discharged past the flexible valve 38 at the end the cylinder into the chamber betw en the walls 11 and 12 within which the compress located. The compressed as passes upwardly through the pipe 16 into the upper chamberand thence through the pipe 20 into the condenser (not shown). From the condenser the liquid passes to the low side through the pipe 39.

Tie drive shaft 14; also operates the oil pump, and as oil is discharged i'ipward through the pipe 16, the compressed travels with it. An important for the oil separating disc 17 is'that the compressed gas has no other escape from the lower chamber except through the pipe 16 with the oil, resulting in a mixture of oil and gas. Thus to prevent carrying over of oil into the coils the separator is utilized. The oil received in the upper chamber passes through the opening 4-0 into the space around the shaft 1-4 and from there it returns to the lower chamber.

Numerous changes and modifications may be made in the construction shown, and I do not wish to be limited except as indicated in the appended claims.

I claim:

1. In a compressor for ice machines having a high pressure chamber and a motor mounted outside and entirely exteriorly thereof, the combination of a drive shaft connected to the motor, an intermediate shaft projecting through a wall of the high pressure chamber, a driven shaft located entirely within the chamber, and loose couplings between the three shafts.

2. In a compressor for ice machines having a high pressure chamber and a motor mount- Sll ed outside and entirely exterior-1y thereof, the

combination of a drive shaft connected to the motor, an intermediate shaft projecting through a wall of the high pressure chamber, means on said intermediate shaft providing a seal, a driven shaft located entirely within the chamber, and loose couplings between the three shafts.

3. In a compressor for ice machines having a high pressure chamber and a motor. mounted outside and entirely eXteriorly thereof, the combination of a drive shaft connected to the motor, an intermediate shaft projecting through a wall of the high pressure chamber, means actuated by the pressure within said chamber for effecting a sealing engagement between the shaft and its bearing, a driven shaft located entirely within the chamber, and loose couplings between the three shafts. c.

4. In a compressor for ice machines having a high pressure chamber and a motor mounted vertically above the same,.the combination of a motor shaft, an intermediate shaft projeoting through a wall of said chamber, and,

a driven shaft entirely within said chamber,- loose couplings connecting the three shafts, and means on said intermediate shaft providing a tapered ground bearing seat.

5. In a compressor for ice machines having a high pressure chamber and a motor mounted vertically above the same, the combination of a motor shaft, an intermediate shaft projecting through a wall ofsaid chamber, and a driven shaft entirely within said chamber, loose couplings connecting the three shafts, said intermediate shaft having one portion of small diameter and another portion'of large diameter and-a tapered seat provided at the junction of said large and small diameters.

6. In a compressor for ice machines, the combination of a motor having a shaft, means providing a higlrpressure chamber, a driven shaft located entirely within said chamber, a connecting shaft between the motor and driven shafts, said connecting shaft projecting through a wall of said high pressure chamber, a bearing plug mounted in said wall and means on said plug and said connectingshaft for providing a tapered ground seat. f

7 In a compressor for ice machines, the combination of means providing a high pressure chamber, a compressor and an oil pump within said chamber, means for delivering compressed gas through said oil pump, and an oil separator located in the upper portion of said high pressure chamber. and adapted to separate the gas and oil.

8. I112 combinatiom walls providing upper and lower high pressure chambers, a compressor and an oilpumpin the lower chamber, means for delivering high pressure gas from the lower to the upper chambers through said oil pump, and a revoluble disc i i i high pressure chamber, and adapted to sepaoil and the gas.

9. I11 a compressor for the ice machine, the a combination of walls providing a high pressure chamber, a motor driven shaft within said chamber, meansfor compressing gas and means for circulating oil and a disc secured to said'shaft and rotating therewith, said disc projecting across the space in the chamberbetween the compressor and outlet from the rate oil from the gas. 1 In testimony whereof Ihave aflixed my Sig-- RASMUS M. HVID;

nature. 

